C Tutorial/math.h/fabs

fabs

Item Value Header file math.h Declaration float fabsf(float num);double fabs(double num);long double fabsl(long double num); Return returns the absolute value of num.

<source lang="cpp">#include <math.h>

 #include <stdio.h>
 int main(void)
 {
   printf("%1.1f %1.1f", fabs(1.0), fabs(-1.0));
   return 0;
 }</source>